The word "Nancy-boy" is a postwar term for a homosexual male. It is a softer word than faggot, queer, or dick-smoker. "Nancy-boy" is synonymous with "that way," meaning light-in-the-loafers, but harmless and not at all threatening or predatory.

Your brother is sure a Nancy-boy. His house is just beautiful, and he keeps a wonderful yard. His pug dogs are cute too!

n. referred to by George Orwell in his Book "Down and Out in Paris and London.
Early 20th century men, usually androgynous and well dressed that frequent trampish parts of London with a suggested tendency to homosexuality, though not explicitly pronounced.

"The charge was elevenpence, but it was a dark, evil-smelling place, and a notorious haunt of the 'nancy-boys.' Downstairs, in the murky kitchen, three ambiguous-looking youths in smartish blue suits were sitting on a bench apart, ignored by the other lodgers. I suppose they were 'nancy-boys.' -Chapter XXIX, Down and Out